Sulphur burner



June 2, 1942; l R. a. PRITZ summon BURNER Filed April 13, 1940 2 Shets-Sheef 1 R IINVENTOR ATTORNEY un R. E. FRITZ A sunraua BURNER Filed April 15, 1940 I 2 sums-Sheet. z

A i R v v p I t v v v v lbw u 7 o "IN-VENTOR BY r v I I ATTORNEY Patented June 2, 1942 v 1 V summon imam Richard E. Prltz. Philadelphia, Pa., assignor to E. I. all Pont de Nemonrs a Company, Wilmington. M, a corporation a! Delaware Application April'13, 1940. Serial No. 329,532

2 Claims. (01. 23-278) This invention relates to improvements in sulphur burners oi the type variously known in the art as pan-burners or brick-burners and has for its objects to simplify the operating and cleaning out of the burner, to obtain improved operation and to minimize loss of sulphur, and to obtain such results and advantages as will be apparent hereinafter.

These objects are'accomplished by the appsratus shown in the accompanying drawings in which g Figure 1 iso perspective. view of a clean-out .box embodying the prineiplesof this invention;

Figure 2 is an elevation showing the clean-out box applied to a brick-bumer; Figure 3 is a plan view of Figure 2; and

Figure 4 is a section taken along line 4-4 of- Figure 3. o

The brick-burners or pan-bumers commonly used in burning sulphur in the sulphuric acid art comprise massive brick-work'housings of the character illustrated at I. Figures 2, 3 and 4.

in Figure 1.

also necessary at periodic intervals to shut down the burner feed to burn the residue free or sulphur and'to clean the residue from the burner. As applied to the manufacture of sulphuric acid, especially in lead chamber systems, these operations result in system unbalance and attendant loss of production, increased niter rate and loss of sulphur.

'Ihesedisadvantages are avoided by means of the clean-out box of this invention illustrated This box as shown may be constructed of any suitable material, such as sheet iron. It is provided with two hooded openings 1. provided with a removable cowl-like cover 8, which are adapted to form with the clean-out ports 5 of the burner an air duct leading into the clean-out box. Within the clean-out box 6 is a horizontal tray or pan 9 arranged on'a suitable trip mechanism comprising the shaft III, the arm II and the catch and pin structure l2.

' When thecatch' i2 is raised the arm ll swings The bottom 01 these furnaces is constructed in the nature of a pan adapted to hold a body of molten and burning sulphur as shown at 2, Figure 4. The burner is equipped with suitable teed mechanism as illustrated at 3, adapted to feed sulphur to the pan as required to maintain the molten burning body therein. In the type of furnace illustrated the bottom 4, as shown in Figure 4, is raised considerably above the ground level for the purpose of making it easier for the operator to remove ash and residue from the furnace whenever it becomes necessary to do so. Clean-out. ports 5 are provided for this purpose and serve additionally as airports. Other air ports are commonly provided in the walls or the burner but are not illustrated here. The portion of the burner extending beyond the pan,

as shown at the left hand of Figures 2 and 3,

is utilized as a combustion chamber to insure complete combustion before the gases are passed on out of the burner.

Burners of the type described above illustrate a time of 'pan-burnerin .common use. Panburners of other constructionare also known in the art, and it will be understood that my invention is equally applicable to such burners.

In the operation of such burners there is a gradual cumulation or residue and ash, both on the surface of the molten sulphur and on the bottom of the pan. At periodic intervals it is necessary to break up incrustations which form on the surface to cause them to sink to the bottom or to remove them from. the furnace. It is out permitting tray 9 to swing about the pivot 'III and drop down against the side of the cleanout box so that ash or residue in'the pan 9 drops to the bottom of the box. Atthe bottom r the box is a door l3 adapted to be secured in closed position by suitable latch means it and I5. Ad-

jacent the tray 9 and slightly above it are a plurality of openings 16 and .Il adapted to act as air ducts.

- When applied to a pan-burner as illustrated in Figures 2, 3 and 4, ash, residue, dirt, etc.,' may be removed irom the sulphur .burner without substantially interfering with its operation. The ash and residue accumulating in the burner is periodically hoed out through the clean-out ports. 5. When the cowl hoods 8 are removed a hoe or rake may be inserted into the burner and the accumulated dirt and residue hoed or raked out into the clean-out box. The hoods l slope back away from thebumer wall in order that the hoe or rake may be angled into the furnace over a maximum of the pan bottom 4.

In raking out the ash and residue considerable sulphur is also raked out into the clean-out box. This molten sulphur together with the dirt and residue is caught in the tray or pan 9 where it continues-to burn when the cowl covers 8 are replaced to form the air ducts. The suction in the furnace draws the air intol-the ports l6 and I! over the tray '9 up through the hooded openings l, which are covered by the cowl hoods 8, into the burner. In this manner ash and residue can easily be removed from the furnace 66 without having to shut it down. Any sulphur the bottom of the box t. The tray is then 188- tened in its normal position as shown and the operation repeated as often as necessary.

Having described my invention with reference to some -particular modification thereof it will readily be understood by those skilled in the art that my invention is not restricted thereto and that the principles I have described may be embodied in apparatus of widely differing form. I desire it understood, therefore, that such variations as come within the spirit and scope of my invention are intended to be included in the appended claims.

I claim: i

1. In a sulphur burner having a pan adapted to hold a body of molten and burning sulphur and clean-out ports the combination therewith of a clean-out box comprising an enclosure, duct-forming means connecting the interior of said enclosure with said clean-outiports, air ducts in said enclosure whereby air may be drawn into the enclosure up through said duct-forming means and into the burner, and means adjacent said air ducts for holding molten sulphur and residue from the burner until the sulphur is burned therefrom.

. 2. A clean-out box for a sulphur burner of the I pan-burner type comprising an enclosure, 9. tray therein pivotally mounted in a manner to swing from a horizontal position to a vertical position hooded opening in the top of said enclosure above saidtray RICHARD E. FRITZ. 

